EP0580144A3 - Apparatus for recording and reproducing video signals with preemphasis and deemphasis processes - Google Patents

Apparatus for recording and reproducing video signals with preemphasis and deemphasis processes Download PDF

Info

Publication number
EP0580144A3
EP0580144A3 EP19930111678 EP93111678A EP0580144A3 EP 0580144 A3 EP0580144 A3 EP 0580144A3 EP 19930111678 EP19930111678 EP 19930111678 EP 93111678 A EP93111678 A EP 93111678A EP 0580144 A3 EP0580144 A3 EP 0580144A3
Authority
EP
European Patent Office
Prior art keywords
deemphasis
preemphasis
recording
processes
video signals
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP19930111678
Other versions
EP0580144A2 (en
EP0580144B1 (en
Inventor
Ryo Hirayama
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Victor Company of Japan Ltd
Original Assignee
Victor Company of Japan Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP4215598A external-priority patent/JP2947432B2/en
Priority claimed from JP4215597A external-priority patent/JP2855982B2/en
Priority claimed from JP4216337A external-priority patent/JPH0646365A/en
Application filed by Victor Company of Japan Ltd filed Critical Victor Company of Japan Ltd
Publication of EP0580144A2 publication Critical patent/EP0580144A2/en
Publication of EP0580144A3 publication Critical patent/EP0580144A3/en
Application granted granted Critical
Publication of EP0580144B1 publication Critical patent/EP0580144B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/02—Editing, e.g. varying the order of information signals recorded on, or reproduced from, record carriers
    • G11B27/031—Electronic editing of digitised analogue information signals, e.g. audio or video signals
    • G11B27/032—Electronic editing of digitised analogue information signals, e.g. audio or video signals on tapes
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
    • G11B15/02—Control of operating function, e.g. switching from recording to reproducing
    • G11B15/05—Control of operating function, e.g. switching from recording to reproducing by sensing features present on or derived from record carrier or container
    • G11B15/087—Control of operating function, e.g. switching from recording to reproducing by sensing features present on or derived from record carrier or container by sensing recorded signals
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/02—Editing, e.g. varying the order of information signals recorded on, or reproduced from, record carriers
    • G11B27/031—Electronic editing of digitised analogue information signals, e.g. audio or video signals
    • G11B27/036—Insert-editing
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/19—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
    • G11B27/28—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording
    • G11B27/30—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on the same track as the main recording
    • G11B27/3027—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on the same track as the main recording used signal is digitally coded
    • G11B27/3036—Time code signal
    • G11B27/3054—Vertical Interval Time code [VITC]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/91—Television signal processing therefor
    • H04N5/92—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
    • H04N5/9201—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving the multiplexing of an additional signal and the video signal
    • H04N5/9206—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving the multiplexing of an additional signal and the video signal the additional signal being a character code signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/91—Television signal processing therefor
    • H04N5/92—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
    • H04N5/923—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback using preemphasis of the signal before modulation and deemphasis of the signal after demodulation
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/90—Tape-like record carriers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/91—Television signal processing therefor
    • H04N5/92—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
    • H04N5/9201—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving the multiplexing of an additional signal and the video signal

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Television Signal Processing For Recording (AREA)
EP93111678A 1992-07-21 1993-07-21 Apparatus for recording and reproducing video signals with preemphasis and deemphasis processes Expired - Lifetime EP0580144B1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
JP4215598A JP2947432B2 (en) 1992-07-21 1992-07-21 Video signal recording device
JP215597/92 1992-07-21
JP4215597A JP2855982B2 (en) 1992-07-21 1992-07-21 Video signal recording device, video signal recording / reproducing device, and video signal reproducing device
JP216337/92 1992-07-22
JP4216337A JPH0646365A (en) 1992-07-22 1992-07-22 Method and device for recording/reproducing video signal

Publications (3)

Publication Number Publication Date
EP0580144A2 EP0580144A2 (en) 1994-01-26
EP0580144A3 true EP0580144A3 (en) 1994-07-20
EP0580144B1 EP0580144B1 (en) 1999-01-13

Family

ID=27329777

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93111678A Expired - Lifetime EP0580144B1 (en) 1992-07-21 1993-07-21 Apparatus for recording and reproducing video signals with preemphasis and deemphasis processes

Country Status (1)

Country Link
EP (1) EP0580144B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003026287A1 (en) * 2001-09-13 2003-03-27 Sony Corporation Information recording/reproducing apparatus and information recording/reproducing method

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0120615A1 (en) * 1983-02-28 1984-10-03 Sony Corporation Apparatus for, and method of, recording scrambled or coded television signals
US4618893A (en) * 1983-07-29 1986-10-21 Victor Company Of Japan, Ltd. Noise reducing system for video signal
US4750037A (en) * 1985-10-07 1988-06-07 Victor Company Of Japan, Ltd. Noise reduction system for video signal
JPH02312375A (en) * 1989-05-29 1990-12-27 Canon Inc Image recording and reproducing device
EP0440242A2 (en) * 1990-01-31 1991-08-07 Sanyo Electric Co., Ltd. Noise reduction circuit for video signal recording/reproduction device
JPH03250887A (en) * 1990-02-28 1991-11-08 Sony Corp Video signal encoder
JPH0548995A (en) * 1991-08-15 1993-02-26 Sony Corp Digital magnetic recording device

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0120615A1 (en) * 1983-02-28 1984-10-03 Sony Corporation Apparatus for, and method of, recording scrambled or coded television signals
US4618893A (en) * 1983-07-29 1986-10-21 Victor Company Of Japan, Ltd. Noise reducing system for video signal
US4750037A (en) * 1985-10-07 1988-06-07 Victor Company Of Japan, Ltd. Noise reduction system for video signal
JPH02312375A (en) * 1989-05-29 1990-12-27 Canon Inc Image recording and reproducing device
EP0440242A2 (en) * 1990-01-31 1991-08-07 Sanyo Electric Co., Ltd. Noise reduction circuit for video signal recording/reproduction device
JPH03250887A (en) * 1990-02-28 1991-11-08 Sony Corp Video signal encoder
JPH0548995A (en) * 1991-08-15 1993-02-26 Sony Corp Digital magnetic recording device

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 15, no. 108 (E - 1045) 14 March 1991 (1991-03-14) *
PATENT ABSTRACTS OF JAPAN vol. 16, no. 48 (E - 1163) 6 February 1992 (1992-02-06) *
PATENT ABSTRACTS OF JAPAN vol. 17, no. 351 (E - 1392) 2 July 1993 (1993-07-02) *

Also Published As

Publication number Publication date
EP0580144A2 (en) 1994-01-26
EP0580144B1 (en) 1999-01-13

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